Australia has some of the world's costliest homes. Will scrapping tax breaks help?

"I think Australia needs to phase out negative gearing and the capital gains tax discount, despite the real risks involved. The current system is fundamentally regressive - it lets wealthy investors with multiple properties claim tax deductions that first-time buyers can't access. This artificially inflates demand and prices young people out of the market. The data is clear: these tax breaks disproportionately benefit high-income earners while homeownership rates for under-40s have cratered. Yes, there's a supply risk if investors exit the market suddenly. But that's an argument for *gradual* reform with proper transition periods, not for maintaining a broken status quo indefinitely. We can grandfather existing investments while closing the loophole for new purchases. The real issue is that we've treated housing as an investment vehicle rather than shelter. These tax incentives have fed that mentality for decades. It's time to rebalance, even if it's politically difficult."

"Australia should absolutely eliminate tax breaks on housing, particularly negative gearing and capital gains tax discounts, which disproportionately benefit wealthy investors and distort the housing market. These policies inflate demand for investment properties, driving up prices and locking young people out of homeownership. The argument that removing these breaks would reduce supply is flawed—investors aren’t building new homes; they’re competing with first-time buyers for existing stock. If anything, redirecting capital away from speculative investment could incentivize more productive uses of capital, like actual housing development. The current system is unsustainable and entrenches intergenerational inequality. Bold reforms are needed, even if they disrupt the status quo. The affordability crisis won’t be solved by preserving policies that created it."

"Australia should scrap negative gearing and the CGT discount, full stop. These concessions don’t add net new housing; they merely encourage leveraged speculation on existing dwellings. Treasury data show 80 % of investor borrowing is for established stock, displacing young owner-occupiers and inflating prices. Those who claim abolition will collapse construction ignore the RBA’s own modelling: supply elasticity to investor demand is near-zero once vacancy-adjusted. I’ve long argued (see my March ’23 note) that the chief barrier to entry isn’t supply, it’s the tax-advantaged bidding war driven by these distortions. Remove them, redirect the $9 billion annual subsidy to shared-equity or build-to-rent schemes, and first-home access rises without a single brick disappearing."

"I firmly believe that Australia should eliminate tax breaks on housing, as they primarily benefit wealthier homeowners and investors rather than addressing the root of the affordability crisis faced by young people. By removing these breaks, we can redirect funding into affordable housing projects and first-home buyer assistance programs. While some argue that this move could reduce housing supply, the current system incentivizes speculation and drives up prices without genuinely increasing housing availability. We need to prioritize sustainable homeownership for young Australians, and that requires a fundamental shift away from tax incentives that inflate the market. It’s time to focus on creating a housing environment where young people can thrive, not just survive."

"Eliminating negative gearing and the capital gains tax discount would likely reduce housing supply and worsen affordability over time. These incentives drive a significant share of new rental stock, particularly apartments, by making leveraged investment viable. Removing them would lower expected returns, slowing construction at a moment when Australia already faces chronic underbuilding due to zoning restrictions and high costs. While investor demand does bid up existing homes and disadvantage first-home buyers, the core problem remains insufficient total supply, not just who owns it. Historical evidence from tax changes shows investors often exit or shift strategies rather than new dwellings magically appearing for owner-occupiers. Targeted supply reforms—streamlining approvals and releasing land—offer a more direct path than blunt tax removal."

"I'll push back on Grok's claim that these tax breaks drive "significant" new rental stock. As Kimi correctly notes, 80% of investor borrowing goes to *existing* homes - this isn't creating supply, it's just determining who owns what's already there. The "we need investors to build rentals" argument fundamentally misunderstands the problem. I agree with everyone except Grok that these policies distort the market against young buyers. But I'm skeptical of the optimism from DeepSeek and GPT-4o-mini about redirecting savings to affordable housing schemes. Government housing programs have their own dysfunction. Where I've become more convinced: Kimi's point about supply elasticity being near-zero is crucial. If removing tax breaks doesn't actually reduce construction (because investors weren't building anyway), then the main effect is rebalancing who can compete for existing stock. That's exactly what we need. Grok, your "targeted supply reforms" are necessary but orthogonal - we can do both."

"I agree with Claude-Sonnet and Kimi-K2 that the argument that tax breaks drive significant new rental stock is overstated. The data shows that most investor activity is focused on existing homes, not new construction, so removing these breaks wouldn’t drastically reduce supply. I also agree with Kimi’s point about supply elasticity being near-zero—investors aren’t driving new builds, so removing tax incentives won’t collapse construction. Where I differ slightly is with Grok’s emphasis on zoning and land release as the primary solution. While supply-side reforms are crucial, they don’t address the immediate distortion caused by tax breaks that inflate demand and prices. We need both: eliminate regressive tax incentives *and* streamline supply-side barriers. I still firmly believe that removing negative gearing and CGT discounts is essential to rebalance the market in favor of first-time buyers. The status quo entrenches inequality and prioritizes speculative investment over housing as shelter. Bold reforms are overdue."

"I’ve not shifted my view. The claim that investors are the engine of new supply is a convenient myth: 80 % of their borrowing is for the second-hand market, and the remaining “new builds” are overwhelmingly apartment pre-sales that would have proceeded anyway because developers pre-sell to reduce funding risk. Without the tax perks, land prices fall; that lowers developer break-even points and can *increase* feasibility. Grok is right that planning bottlenecks are binding, but he treats them as a reason to keep the rebate. That’s incoherent: two separate market failures don’t justify perpetuating the one that most obviously transfers wealth from renters to leveraged speculators."

"I maintain my stance that Australia should eliminate tax breaks on housing, as these distortions primarily favor wealthier investors and exacerbate the affordability crisis for young people. I concur with Claude-Sonnet, Kimi, and DeepSeek that the argument about investor-driven new supply is largely overstated. The data shows a clear bias towards existing properties, and removing tax breaks will help rebalance the market, allowing first-time buyers a fairer chance. However, I do partially align with Grok regarding the importance of targeted supply reforms. While we must eliminate regressive tax incentives, we can't ignore that regulatory hurdles also play a significant role in the housing crisis. My view remains that we need a dual approach—ending tax breaks while also addressing supply bottlenecks—to create a genuinely accessible housing market."

"I agree that most investor borrowing targets established dwellings and that zoning/approval reforms are essential. The 80 % figure weakens the “investors build new homes” claim, and both tax and planning fixes can be pursued together. I still disagree, however, that removing negative gearing and the CGT discount is close to risk-free. The remaining 20 % of investor finance, combined with the broader expected-return signal these concessions send, supports apartment pre-sales and build-to-rent pipelines that would otherwise stall. Historical episodes of tighter deductibility show measurable drops in new rental commencements, not just price reallocation. Land-price falls may help marginally, but not enough to offset slower construction when demand from leveraged buyers shrinks. Targeted grandfathering plus supply-side action is preferable to broad removal."